Address feedback

Change-Id: Idb7387e56036fb4b7cbda406b14f91b7e11759c6

starboard/build/config/BUILD.gn

@@ -240,8 +240,9 @@ config("default_compiler_flags") {
   }
 }
 
-# TODO: b/329683364 - Move other flags setting the c++ standard from each
-# platform's platform_configuration to this config.
+# This config is intended to encapsulate all platform-specific logic for selecting the C++ standard
+# version in shared code. Starboard platform-specific build code should not attempt to overload this.
+# TODO: b/329683364 - Refactor the remaining related flags from each platforms platform_configuration to here.
 config("default_cpp_standard") {
   if ((sb_is_modular && current_toolchain == cobalt_toolchain) || is_android) {
     cflags_cc = [ "-std=c++17" ]

starboard/nplb/compiler_compliance/cpp20_support.cc

@@ -26,7 +26,7 @@ namespace compiler_compliance {
 namespace {
 
 // These examples are taken after referring to
-// 1) The chromium C++20 allowlist:
+// 1) C++20 allowlist from chromium m114 milestone branch :
 // https://chromium.googlesource.com/chromium/src/+/refs/branch-heads/5735/styleguide/c++/c++-features.md
 // 2) cpp reference : https://en.cppreference.com/w/cpp
 
@@ -35,16 +35,6 @@ void test_string_ends_with() {
   bool result = std::string("foobar").ends_with("bar");
 }
 
-#if __cpp_lib_assume_aligned >= 201811L
-// Test std::assume_aligned support
-void test_assume_aligned(int* p) {
-  int* p1 = std::assume_aligned<256>(p);
-}
-#else
-// Fallback implementation if std::assume_aligned is not supported
-// Currently android platform is incapable of building std::assume_aligned.
-#endif
-
 // Test std::erase_if support
 void test_erase_if() {
   std::vector<char> cnt(10);